<Button>:
    font_size: 40
    size_hint: 0.3,0.3

<FloatLayoutWidget>:

    canvas:
        Color:
            rgba: [1,1,1,1]
        Rectangle:
            size: self.size
            pos:self.pos

    Button:
        text: "Bt0"
        background_color: 0.1,0.5,0.6,1
        pos_hint: {"x":0,"top":1}

    Button:
        text: "Bt1"
        background_color: 1,0,0,1
        pos_hint: {"x":0.35,"y":0.3}

    Button:
        text: "Bt2"
        background_color: 0.4,0.5,0.6,1
        pos_hint: {"x":0.7,"bottom":0.3}

    Button:
        text: "Bt3"
        background_color: 0,0,1,1
        pos_hint: {"x":0.7,"top":1}

    Button:
        text: "Bt4"
        background_color: 0.8,0.9,0.2,1
        pos_hint: {"x":0,"bottom":1}

